1. a) The minimum distance from tanks to adjacent tanks shall be as follows:

   Tank Capacity (Gallons)	Minimum Distance (Feet)
   24,000 or less.................................................	5
   24,001 to 48,000............................................	10
   48,001 to 75,000............................................	13
   75,001 to 100,000..........................................	15
   Over 100,000.................................................	One Tank Diameter

2. b) If tanks are of different capacities, the capacity of the larger tank shall govern its distance to adjacent tanks.
3. c) Existing tanks of under 24,000 gallons shall maintain a minimum distance of at least 3 feet.

(Source: Amended at 9 Ill. Reg. 10012, effective October 1, 1985)